California Nebula ( Marco Gulino )

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: California Nebula · NGC 1499 · The star ξPer

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California Nebula

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California Nebula

Imaging Telescopes Or Lenses: Sky-Watcher Esprit 100ED
Imaging Cameras: ZWO ASI094MC Pro
Mounts: iOptron CEM40
Filters: Optolong L-eNhance
Software: PixInsight · GuLinux.net AstroPhoto Plus
Guiding Telescopes Or Lenses: 365Astronomy 50mm Guidescope
Guiding Cameras: ZWO ASI178MM

Dates:: Nov. 4, 2020
Frames:: 61×300″(5h 5′)
Integration:: 5h 5′
Avg. Moon age:: 18.26 days
Avg. Moon phase:: 86.83%

Basic astrometry details

Astrometry.net job: 3982716

RA center: 04h01m06s.10

DEC center: +36°27′18″

Pixel scale: 2.015 arcsec/pixel

Orientation: 169.998 degrees

Field radius: 1.758 degrees

Resolution: 5371x3257

File size: 26.9 MB

Locations: Ealing, London, London, United Kingdom

Data source: Backyard

California nebula under London Sky.

Conditions weren't exactly ideal: light pollution, obviously, then clouds rolled in just when I was ready to start my sequence, shortening capture time by a couple of hours.

Also, the nearly full moon was very close to the target, causing some nasty reflections on the (now cropped out) border of the image.

Overall I'm quite satisfied by the result though, the Optolong L-Enhance filter seems to be doing a really great job.

Imagers of Italy
UK Astro-Imaging

Best of
Deep Sky: nebulae

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	3982716
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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California Nebula

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California Nebula

California Nebula

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